Exam -Questions on Chemical Engineering Thermodynamics II - Solutions | CBE 30367, Exams of Chemistry

Download Exam -Questions on Chemical Engineering Thermodynamics II - Solutions | CBE 30367 and more Exams Chemistry in PDF only on Docsity! Sermy BOOXR Exam 3 1. (25) a) (5) The Margules equation is G*= A x, % Show that the corresponding activity coefficient sap ession for ca ponent] is RTIny = A x2”. 7 w = An A(% Rin) = aa = (er Aaa] Ag Be = Ane S.C) = Ane T8388 1a +k = Ao. [ue a Ap Ste + Bet = Ape A te U2 eAre b) (5) What is the infinite dilution activity coefficient of x-propanol in the mixture shown below? ae 2-PROPANOL (IM WATERIZ} AT n x, wh Zoe S R L013 BAR 1 \ yeep b YAN LAAR CONSTANTS: es ie epert 2 190d c) (3) What are the three excess Gibbs free energy madels that we studied that are based on the idea of local compositions being different than the bulk? Wilson, ARTE, UNTOURS d) (2) Which model that we studied is best suited for polymer solutions? PloryYaggres ¢) (4) If you needed the solubility parameter of a particular compound and you could nat find the value in the table (in the book or elsewhere), how would you calculate § for that compound? What data would you need? $ 2 fal Vo so Ld look we rg vr allan, acd Yh (apurd molor volurne. . f) (6) A temary mixture of camponents 1, 2, and 3 can be represented by the triangular diagram shown below, i) One mole of feed with the composition indicated by point A on the diagram is introduced into a vessel. At equilibrium, is there one phase or two phases present? 2 ghases ii) If there are two phases, what are the compositions of the two phases? If applicable, label the Phases a and b on the diagram. Xe Xere7 a XAG 0S Xn eels M, 20,55 iii) Which binary pair(s) is miscible in all proportions, Xa tS ee a4 1-2 1 EX